基于磁介电材料的小型化宽频带高阻表面研究

项目名称： 基于磁介电材料的小型化宽频带高阻表面研究

项目编号： No.61201063

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 电子学与信息系统

项目作者： 杨国敏

作者单位： 复旦大学

项目金额： 27万元

中文摘要： 随着现代科技不断发展,无线设备越来越小型化,射频电路和器件的小型化与电磁兼容问题越来越严峻。高阻表面结构由于具有带阻特性和同相反射的优越性能,可以有效减小电磁干扰、改善天线的辐射特性、减小天线的剖面。然而,由于高阻表面需要周期性的结构,其自身的小型化和宽频带问题已成为制约无线设备和系统小型化的关键因素之一。磁介电材料的高磁导率特性可以极大增加器件的等效电感值，实现射频器件小型化宽频带设计。本项目拟采用磁介电材料作为基板对高阻表面的小型化宽频带展开研究。包括：研究基于磁介电材料高阻表面的场-路结合分析和仿真方法；磁介电材料的研制与不同类型高阻表面的小型化宽频带设计和优化方法；最后通过实验验证高阻表面的小型化宽频带设计。本项目将为基于磁介电材料的高阻表面研究提供一整套建模、仿真和验证技术,并提出实现小型化宽频带高阻表面的设计和优化方法，为磁介电材料高阻表面在无线通信中的发展和应用奠定基础。

中文关键词： 磁性材料；磁介电材料；小型化微波器件；高阻表面；可调谐微波器件

英文摘要： With the development of modern microwave technologies, the wireless equipments are becoming smaller and smaller,which will make the problems of radio frequency (RF) circuits and devices miniaturization and electromagnetic compatability more and more difficult.High impedance surfaces (HIS), with their characteristics of forbidden band gap and in phase reflection, can be used as an effective method to reduce the electromagnetic interference. Moreover, the high impedance surface can improve the antenna radiation patterns and decrease the profile of antennas. However, this has been challenging to achieve miniaturized high impedance surfaces for the miniaturization of the wireless communication circuits and systems since the HIS need a periodic structure,especially at low microwave frquencies.With their high relative permeability,magneto-dielectric materials show great potential in the design of miniaturization and wideband of RF devices. In this study,magneto-dielectric materials are adopted as the high impedance surface substrate to realize the design of miniaturization and wideband devices.The analysis and simulation in a combined fields and circuits method of high impedance surfaces with magneto-dielectric substrate will be presented. The fabrication process of magneto-dielectric materials,the method of design an

英文关键词： Magnetic materials；Magneto-dielectric materials；Miniaturized microwave devices；High impedance surfaces；Tunable microwave devices